WO2023098574A1

WO2023098574A1 - Transmission instruction method and communication apparatus

Info

Publication number: WO2023098574A1
Application number: PCT/CN2022/134214
Authority: WO
Inventors: 李胜钰; 官磊; 丁洋
Original assignee: 华为技术有限公司
Priority date: 2021-12-02
Filing date: 2022-11-25
Publication date: 2023-06-08
Also published as: CN116234070A; US20240323974A1; EP4429158A1

Abstract

The present application provides a transmission instruction method and a communication apparatus. The method comprises: a terminal device receives a media access control-control element (MAC CE) or downlink control information (DCI); and the terminal device does not receive some or all downlink transmissions in a time window on the basis of instruction information in the MAC CE or DCI. On the basis of the solution provided by the present application, discontinuous reception (DRX) transmissions can be dynamically and flexibly configured for the terminal device, thereby helping to reduce the performance loss of the terminal device.

Description

A transmission instruction method and communication device

This application claims the priority of the Chinese patent application with the application number 202111460771.5 and the application title "A Transmission Indication Method and Communication Device" submitted to the China Patent Office on December 02, 2021, the entire contents of which are incorporated by reference in this application middle.

technical field

The present application relates to the field of communication technologies, and in particular to a transmission instruction method and a communication device.

Background technique

With the development of cellular communication technology, the power consumption of network equipment (such as base station) is getting higher and higher. For example, from the fourth generation (4th Generation, 4G) communication technology to the fifth generation (5th Generation, 5G) statistics, the spectrum used by network equipment is getting wider and wider, and the number of transmitting antennas configured is increasing. (Such as base stations) Power consumption increases by 2 to 3 times. In addition, the power consumption of network equipment may not be directly proportional to the business load. For example, the power consumption of network equipment on multiple transmission time intervals (transmission time interval, TTI) includes load-related dynamic power consumption and load-independent static power consumption. , at this time, the power consumption of the network equipment is not directly proportional to the service load.

The new radio (new radio, NR) protocol supports configuring dis-continuous reception (DRX) transmission for the terminal equipment, so that the terminal equipment only receives certain channels and reference signals during a specified period of time. The DRX configured by the network device for the terminal device is periodic. For example, as shown in FIG. 1 , the network device may configure time window parameters of a long DRX cycle for the terminal device. The time window parameters include the length P _long of each time window (also known as DRX period), the start subframe offset S _sf , the start slot offset value S _slot of the onDuration state in the start subframe, and the onDuration state The duration T. The terminal device enters the active state at the beginning of the initial time slot of the onDuration state in each time window, until the end of the onDuration state, the terminal device turns into the inactive state. Only in the active state will the terminal device monitor the downlink control channel (physical downlink control channel, PDCCH) of most of the scheduling data, so as to transmit and receive data according to the instruction of the PDCCH. For configuring DRX transmission for terminal devices, since the DRX cycle is generally relatively long, the delay in DRX configuration and reconfiguration is also relatively large. This kind of DRX transmission scheme for terminal devices is more suitable for large time granularity and semi-static performance. Data transmission often causes large performance loss, such as terminal equipment experience rate loss.

Therefore, how to ensure communication performance while reducing power consumption of network devices and terminal devices is an urgent problem to be solved.

Contents of the invention

Embodiments of the present application provide a transmission indication method and a communication device, which can dynamically and flexibly configure DRX transmission, which is beneficial to reduce performance loss of terminal equipment and reduce power consumption of network equipment and terminal equipment at the same time.

In a first aspect, the present application provides a transmission indication method, the method includes: a terminal device receives first indication information, the first indication information instructs the terminal device not to receive the first downlink transmission within a first time window, the first downlink transmission An indication information is carried in the first media access control-control element (medium access control-control element, MAC CE) or the first downlink control information (downlink control information, DCI); the terminal device based on the first indication information in the The first downlink transmission is not received within a time window. Based on the method described in the first aspect, the terminal device can dynamically determine whether to receive downlink transmission within the first time window through the first indication information in the MAC CE or DCI. It is beneficial to reduce the performance loss of the terminal equipment, and at the same time reduce the power consumption of the network equipment and the terminal equipment.

In a possible implementation, the first MAC CE or the first DCI is carried on a multicast or broadcast physical downlink channel. Since the physical downlink channel of multicast or broadcast is sent to a group of terminal devices, rather than user-specific (UE-specific), the first indication information is sent to the terminal device through the physical downlink channel of multicast or broadcast, avoiding network The problem of high signaling overhead caused by the device sending the first indication information separately for each terminal device reduces the signaling overhead of the network device.

In a possible implementation, the start time of the first time window is determined by the transmission time _T1 of the first physical downlink channel, where the first physical downlink channel is a physical downlink channel that bears the first MAC CE or the first DCI.

In a possible implementation, the starting moment of the first time window is determined by the transmission time _T1 and the first time length ΔT1 of the first physical downlink channel, which carries the first MAC CE or the first For the DCI physical downlink channel, the first time length ΔT1 is preset or indicated by the first indication information. After the terminal device receives the first physical downlink channel, it takes a certain amount of time to decode the first indication information. Determining the start time of the first time window based on the transmission time _T1 of the first physical downlink channel and the first time length ΔT1 can ensure that the start time of the first time window is after the time when the terminal device parses out the first indication information, This avoids the problem of abnormal communication caused by the fact that the terminal device is not sure whether to perform downlink reception before parsing the first indication information.

In a possible implementation, the starting time of the first time window is the starting time of the first time unit, and the first time unit is the earliest time unit whose starting time is not earlier than time T ₂ , time T ₂ = T ₁ +ΔT1. Optionally, the time unit may be a symbol, a sub-slot, a time slot, or a sub-frame. Based on this possible implementation, it is beneficial to ensure that the first time window starts from the beginning of a time unit, conforming to the characteristics that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

In a possible implementation, the first time length ΔT1 is greater than or equal to a first threshold, where the first threshold is the shortest processing time for the first physical downlink channel supported by the terminal device. Based on this possible implementation, it is beneficial to ensure that the determined starting time of the first time window is located after the time when the terminal device parses the first indication information, so as to avoid that the terminal device is not sure whether to The case of downlink reception.

In a possible implementation, the first threshold may be predetermined by the protocol, that is, the shortest processing time supported by the terminal device for the first physical downlink channel is predetermined by the protocol. For the convenience of description, the terminal device will be used below The supported shortest processing duration for the first physical downlink channel is referred to as the shortest processing duration for short.

In a possible implementation, the first physical downlink channel is a first physical downlink shared channel (physical downlink shared channel, PDSCH), and the shortest processing time is from receiving the first PDSCH to sending the HAR corresponding to the first PDSCH. The shortest processing duration T _proc,1 of hybrid automatic repeat request-acknowledgment (HARQ-ACK); or, the shortest processing duration is the shortest processing duration required for the terminal device to receive the first PDSCH and complete the decoding of the first PDSCH

In a possible implementation, the first physical downlink channel is the first PDCCH, and the shortest processing duration is the shortest period from when the terminal device receives the first PDCCH to sending the first PDCCH scheduled physical uplink shared channel (physical uplink shared channel, PUSCH). Processing duration T _proc,2 ; or, the shortest processing duration is the shortest processing duration required for the terminal device to receive the first PDCCH to complete the decoding of the first PDCCH

In a possible implementation, the protocol pre-specifies that the shortest processing duration includes the shortest processing duration in N different situations, where N is greater than 1, and the first threshold is the maximum value among the above-mentioned N shortest processing durations; or, the first gate The limit value is the nth value among the aforementioned N shortest processing durations, where 1≤n≤N, and n is pre-indicated by the network device.

In a possible implementation, the starting time of the first time window is the starting time of the second time unit, and the _second time unit is the earliest unit of time. Based on this possible implementation, it is beneficial to ensure that the first time window starts from the beginning of a time unit, conforming to the characteristics that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

In a possible implementation, the transmission time _T1 of the first physical downlink channel is the transmission start time or the transmission end time of the first physical downlink channel.

In a possible implementation, the duration of the first time window is preset. Presetting the duration of the first time window helps to save the overhead of indicating the duration of the first time window.

In a possible implementation, the duration of the first time window is indicated by first indication information. The duration of the first time window is indicated by the first indication information, the duration of the first time window can be changed dynamically, and the duration of the first time window can be more flexible.

In a possible implementation, the first downlink transmission includes any one or more of the following: PDCCH, dynamically scheduled PDSCH, semi-persistent scheduling downlink shared physical channel (semi-persistent scheduling PDSCH, SPS PDSCH), channel State information-reference signal (channel state information reference signal, CSI-RS) or synchronization signal-broadcast channel block (synchronization signal/PBCH, SSB). For example, the first downlink transmission includes PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS and SSB, which can save power consumption of network equipment and terminal equipment to a greater extent.

In another possible implementation, the first downlink transmission includes: PDCCH, dynamically configured PDSCH, SPS PDSCH and CSI-RS, and the first downlink transmission does not include SSB. For SSB transmission, not only terminal devices in connected state need to receive, but also terminal devices in idle state or inactive state need to receive, but terminal devices in idle state or inactive state may not be able to successfully receive the first indication information. Therefore, reserving SSB transmission in the first time window helps to maintain SSB reception and measurement of idle or inactive terminal devices, and avoids measurement errors caused by network devices not sending SSB but idle or inactive terminal devices trying to detect SSB , to avoid operations such as unnecessary cell reselection. On the other hand, the cycle of SSB transmission itself is relatively large, and the proportion of the time domain is relatively small. The transmission of SSB by the network device within the first time window will not bring a lot of power consumption to the network device.

In yet another possible implementation, the first downlink transmission does not include the PDCCH scrambled by the SSB and the paging radio network temporary identifier (paging radio network temporary identifier, P-RNTI). The PDCCH scrambled by the P-RNTI is used to schedule the paging indication of the terminal equipment, and the position where each terminal equipment receives the corresponding PDCCH scrambled by the P-RNTI is pre-configured. For a certain terminal device, if the network device skips a PDCCH transmission opportunity scrambled by the P-RNTI, it needs to wait until the next preconfigured opportunity, and the waiting delay is relatively large. Therefore, reserving the PDCCH transmission scrambled by the P-RNTI within the first time window helps to maintain the paging reception of the terminal device.

In a possible implementation, when the first downlink transmission includes a PDCCH, the PDCCH includes one or more of the following: a PDCCH scrambled by a cell access RNTI (C-RNTI) scrambled; PDCCH scrambled by configured scheduling RNTI (CS-RNTI), PDCCH scrambled by slot format indication RNTI (SFI-RNTI), interrupted transmission indication RNTI , INT-RNTI) scrambled PDCCH, cancellation indication radio network temporary identifier (cancellation indication RNTI, CI-RNTI) scrambled PDCCH, physical uplink control channel transmission power control radio network temporary identifier (transmit power control-PUCCH-RNTI, TPC-PUCCH-RNTI) scrambled PDCCH, physical uplink shared channel transmission power control wireless network temporary identifier (transmit power control-PUSCH-RNTI, TPC-PUSCH-RNTI) scrambled PDCCH, sounding reference signal transmission power control wireless network Temporary identifier (transmit power control-SRS-RNTI, TPC-SRS-RNTI) scrambled PDCCH, availability indicator radio network temporary identifier (availability indicator RNTI, AI-RNTI) scrambled PDCCH, system information radio network temporary identifier (system information RNTI, SI-RNTI) scrambled PDCCH, random access RNTI (random access RNTI, RA-RNTI) scrambled PDCCH, temporary cell access RNTI (TC-RNTI) scrambled scrambled PDCCH or PDCCH scrambled by paging radio network temporary identifier (paging RNTI, P-RNTI). That is, the terminal device does not perform blind detection on the PDCCHs scrambled by these RNTIs within the first time window.

In a possible implementation, the first indication information further instructs the terminal device not to send the first uplink transmission within the first time window. Correspondingly, the terminal device may also not send the first uplink transmission within the first time window based on the first indication information. Based on this possible implementation manner, the terminal device can dynamically turn off the receiving of the first downlink transmission and the sending of the first uplink transmission, which is beneficial to saving power consumption of the network device and at the same time saving power consumption of the terminal device.

In a possible implementation, the first uplink transmission may include any one or more of the following: a grant-based physical downlink shared channel (grant-based physical downlink shared channel, GB PUSCH), a configured authorized physical uplink shared channel ( configured grantphysical downlink shared channel, CG PUSCH), physical uplink control channel (physical uplink control channel, PUCCH), physical random access channel (physical random access channel, PRACH), uplink sounding reference signal (Sounding Reference Signal, SRS).

In a possible implementation, when the first uplink transmission includes PUCCH, PUCCH may include one or more of the following: PUCCH bearing HARQ-ACK of dynamically scheduled PDSCH, PUCCH bearing HARQ-ACK of SPS PDSCH, PUCCH bearing CSI The PUCCH carrying a scheduling request (scheduling request, SR) or a beam failure recovery (beam failure recovery, BFR) PUCCH.

In a possible implementation, the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window by displaying an indication, and the first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window. The first downlink transmission is not received within the window; the second status value of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device confirms that the value of the first indication information is the second state value. Based on this possible implementation manner, it is beneficial for the terminal device not to miss receiving the downlink transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device confirms that the value of the first indication information is the first state value. Based on this possible implementation manner, it is beneficial to save the power consumption of the terminal device.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device sends a radio resource control (radio resource control, RRC) signal based on the network device. It is determined that the value of the first indication information is the first state value or the second state value. Based on this possible implementation manner, the value of the first indication information can be flexibly determined.

In a possible implementation, the first indication information implicitly indicates that the terminal device does not receive the first downlink transmission within the first time window, and the "existence" of the first indication information indicates that the terminal device does not receive the first downlink transmission at the first time window. The first downlink transmission is not received within the window; "absence" of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device confirms that the first indication information does not exist. Based on this possible implementation manner, it is beneficial for the terminal equipment not to miss receiving downlink transmission, and to ensure communication quality.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device confirms that the first indication information exists. Based on this possible implementation manner, it is beneficial to save the power consumption of the terminal device.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device determines whether the first indication information exists based on the RRC signaling sent by the network device. Based on this possible implementation manner, it may be flexibly determined whether the first indication information exists.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device receives the first downlink transmission within the first time window. Based on this possible implementation manner, it is beneficial for the terminal device not to miss receiving the downlink transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device does not receive the first downlink transmission within the first time window. Based on this possible implementation manner, it is beneficial to save the power consumption of the terminal device.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device determines based on the radio resource control RRC signaling sent by the network device to Whether to receive the first downlink transmission within the window. Based on this possible implementation, when the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, it can flexibly determine whether to receive the first downlink transmission within the first time window.

In a possible implementation, the first indication information is carried on the first MAC CE and the first MAC CE is carried on the SPS PDSCH: when the first indication information indicates that the first downlink transmission is not to be performed within the first time window, and the When the first time window contains the next transmission opportunity of the SPS PDSCH, the terminal device performs any of the following operations:

(1) The SPS PDSCH is not received at the next transmission opportunity. This helps to save power consumption of the terminal device.

(2) The terminal equipment receives the SPS PDSCH on the next transmission opportunity, and determines whether to receive the first downlink transmission in the next first time window according to the first indication information in the SPS PDSCH received on the next transmission opportunity. This facilitates maximum scheduling flexibility.

(3) The terminal device determines whether to receive the SPS PDSCH at the next transmission opportunity according to the RRC signaling sent by the network device. In this way, it can be more flexibly determined whether to receive the SPS PDSCH within the first time window.

In a possible implementation, the first indication information is carried in the first DCI: when the first indication information indicates that the first downlink transmission is not received within the first time window, and the first time window contains the downlink transmission of the first DCI At a transmission opportunity, the terminal device performs any of the following operations:

(1) The first DCI is not received at the next transmission opportunity. This helps to save power consumption of the terminal device.

(2) The terminal device receives the first DCI at the next transmission opportunity, and determines whether to receive the first downlink in the next first time window according to the first indication information in the first DCI received at the next transmission opportunity transmission. This facilitates maximum scheduling flexibility.

(3) The terminal device determines whether to receive the first DCI at the next transmission opportunity according to the RRC signaling sent by the network device, so that it can more flexibly determine whether to receive the first DCI within the first time window.

In a second aspect, the present application provides a transmission instruction method, the method includes: the network device sends first instruction information to the terminal device, the first instruction information is used to instruct the terminal device not to receive the first transmission within the first time window Uplink transmission, the first indication information is carried in the first MAC CE signaling or the first DCI signaling; the network device does not send the first downlink transmission within the first time window.

In a possible implementation, the first MAC CE or the first DCI is carried on a multicast or broadcast physical downlink channel.

In a possible implementation, the starting time of the first time window is the starting time of the first time unit, and the first time unit is the earliest time unit whose starting time is not earlier than time T ₂ , time T ₂ = T ₁ +ΔT1; wherein, T ₁ is the transmission moment of the first physical downlink channel, ΔT1 is the first time length, the first physical downlink channel is the physical downlink channel carrying the first MAC CE or the first DCI, and the first time length ΔT1 is preset, or, the first indication information further indicates the first time length ΔT1.

In a possible implementation, the first time length ΔT1 is greater than or equal to a first threshold, where the first threshold is the shortest processing time for the first physical downlink channel that the terminal device can support.

In a possible implementation, the first physical downlink channel is the first PDSCH, and the shortest processing duration is the shortest processing duration T _proc,1 from the terminal device receiving the first PDSCH to sending the HARQ-ACK corresponding to the first PDSCH; or, The shortest processing duration is the shortest processing duration required by the terminal device to receive the first PDSCH and complete the decoding of the first PDSCH

In a possible implementation, the first physical downlink channel is the first PDCCH, and the shortest processing duration is the shortest processing duration T _proc,2 from the terminal device receiving the first PDCCH to sending the PUSCH scheduled by the first PDCCH; or, the shortest processing The duration is the shortest processing duration required for the terminal device to receive the first PDCCH and complete the decoding of the first PDCCH

In a possible implementation, the starting time of the first time window is the starting time of the second time unit, and the _second time unit is the earliest unit of time.

In a possible implementation, the duration of the first time window is preset; or, the first indication information further indicates the duration of the first time window.

In a possible implementation, the first downlink transmission includes any one or more of the following: PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS or SSB.

In another possible implementation, the first downlink transmission includes: PDCCH, dynamically scheduled PDSCH, SPS PDSCH and CSI-RS, and the first downlink transmission does not include SSB.

In yet another possible implementation, the first downlink transmission does not include the PDCCH scrambled by the SSB and the P-RNTI.

In a possible implementation, when the first downlink transmission includes a PDCCH, the PDCCH includes one or more of the following: PDCCH scrambled by C-RNTI, PDCCH scrambled by CS-RNTI, PDCCH scrambled by SFI-RNTI, INT-RNTI scrambled PDCCH, CI-RNTI scrambled PDCCH, TPC-PUCCH-RNTI scrambled PDCCH, TPC-PUSCH-RNTI scrambled PDCCH, TPC-SRS-RNTI scrambled PDCCH, AI-RNTI scrambled scrambled PDCCH, SI-RNTI scrambled PDCCH, RA-RNTI scrambled PDCCH, TC-RNTI scrambled PDCCH or P-RNTI scrambled PDCCH. That is, the terminal device does not perform blind detection on the PDCCHs scrambled by these RNTIs within the first time window.

In a possible implementation, the first indication information further instructs the terminal device not to send the first uplink transmission within the first time window. Correspondingly, the network device does not receive the first uplink transmission within the first time window.

In a possible implementation, the first uplink transmission may include any one or more of the following: GB PUSCH, CG PUSCH, PUCCH, PRACH, SRS.

Optionally, when the first uplink transmission includes PUCCH, the PUCCH may include one or more of the following: PUCCH bearing HARQ-ACK of dynamically scheduled PDSCH, PUCCH bearing HARQ-ACK of SPS PDSCH, PUCCH bearing CSI, bearing PUCCH of SR or BFR.

In a possible implementation, the first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window; the second state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window; The first downlink transmission is received within the window.

In another possible implementation, the first indication information "exists" indicates that the terminal device does not receive the first downlink transmission within the first time window; the first indication information "absent" indicates that the terminal device does not receive the first downlink transmission within the first time window; A first downlink transmission is received.

For the beneficial effects of the second aspect, reference may be made to the corresponding beneficial effects of the first aspect, which will not be repeated here.

In a third aspect, the present application provides a transmission instruction method, the method includes: a terminal device receives second instruction information, the second instruction information instructs the network device not to send the first downlink transmission within the second time window, and the second The indication information is carried on the first MAC CE or the first DCI, and the end time of the second time window is no later than the transmission time _T1 of the first physical downlink channel carrying the second MAC CE or the second DCI; the terminal device bases on the second The indication information determines that the network device has not sent the first downlink transmission within the second time window, that is, when the terminal device receives the first downlink transmission within the second time window, the first downlink transmission is invalid.

Based on the method described in the third aspect, the terminal device can dynamically determine whether the network device sends the first downlink transmission within the second time window through the MAC CE and the second indication information in the DCI, which is beneficial to reduce the performance of the terminal device loss. Moreover, by making the end of the second time window no later than the transmission time T ₁ of the first physical downlink channel carrying the second MAC CE or the second DCI, the network device does not need to predict the first downlink transmission at a subsequent time The transmission amount is used to determine whether to turn off the first downlink transmission, which is beneficial to save the power consumption of the network device.

Wherein, the transmission time _T1 of the first physical downlink channel may be the transmission start time of the first physical downlink channel or the transmission end time of the first physical downlink channel.

In a possible implementation, the second MAC CE or the second DCI is carried on a multicast or broadcast physical downlink channel. Since the physical downlink channel of multicast or broadcast is sent to a group of terminal devices, rather than user-specific (UE-specific), the second indication information is sent to the terminal device through the physical downlink channel of multicast or broadcast, avoiding network The problem of high signaling overhead caused by the device sending the second indication information separately for each terminal device reduces the signaling overhead of the network device.

In a possible implementation, the end moment of the second time window is determined by the transmission moment _T1 of the first physical downlink channel.

In a possible implementation, the end moment of the second time window is specifically determined by the transmission moment _T1 of the first physical downlink channel and the second time length ΔT2, and the second time length ΔT2 is preset or indicated by the second information indicated. The second time length ΔT2 is greater than zero. Since the network device needs a certain processing delay to prepare to send the second indication information after the second time window, the end time of the second time window is determined based on the transmission time _T1 of the first physical downlink channel and the second time length ΔT2, It is beneficial to make the end time of the second time window be before the transmission time _T1 of the first physical downlink channel, so as to better match the sending processing overhead on the network device side.

In a possible implementation, the end time of the second time window is the end time of the third time unit, and the third time unit is the latest time unit whose end time is not later than time _T3 , time _T3 = _T1 -ΔT2. Optionally, the time unit may be a symbol, a sub-slot, a time slot, or a sub-frame. Based on this possible implementation, it is beneficial to ensure that the second time window ends at the end of a time unit, which conforms to the feature that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

In a possible implementation, the end time of the second time window is the end time of the fourth time unit, and the fourth time unit is the latest time unit whose end time is no later than the transmission time _T1 of the first physical downlink channel . Based on this possible implementation manner, it is beneficial to make the end time of the second time window be before the transmission time _T1 of the first physical downlink channel, so as to better match the transmission processing overhead on the network device side.

In a possible implementation, the duration of the second time window is preset. Presetting the duration of the second time window is beneficial to saving the indication overhead of the duration of the second time window.

In a possible implementation, the duration of the second time window is indicated by second indication information. The duration of the second time window is indicated by the second indication information, the duration of the second time window can be changed dynamically, and the duration of the second time window can be more flexible.

In a possible implementation, the first downlink transmission includes any one or more of the following: PDCCH, dynamically scheduled PDSCH, semi-persistently scheduled downlink shared physical channel SPS PDSCH, CSI-RS or SSB. For example, the first downlink transmission includes PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS and SSB, which can save power consumption of network equipment to a greater extent.

In another possible implementation, the first downlink transmission includes: PDCCH, dynamically scheduled PDSCH, SPS PDSCH and CSI-RS, and the first downlink transmission does not include SSB. For SSB transmission, not only terminal devices in connected state need to receive, but also terminal devices in idle state or inactive state need to receive, but terminal devices in idle state or inactive state may not be able to successfully receive the second indication information. Therefore, reserving SSB transmission in the second time window helps to maintain SSB reception and measurement of idle or inactive terminal devices, and avoids measurement errors caused by network devices not sending SSB but idle or inactive terminal devices trying to detect SSB , to avoid operations such as unnecessary cell reselection. On the other hand, the cycle of SSB transmission itself is relatively large, and the proportion of the time domain is relatively small, and the network device sending SSB within the second time window will not bring a lot of power consumption to the network device.

In yet another possible implementation, the first downlink does not include the PDCCH scrambled by the SSB and the P-RNTI. The PDCCH scrambled by the P-RNTI is used to schedule the paging indication of the user, and the position where each user receives the corresponding PDCCH scrambled by the P-RNTI is pre-configured. For a certain terminal device, if the network device skips a PDCCH transmission opportunity scrambled by the P-RNTI, it needs to wait until the next preconfigured opportunity, and the waiting delay is relatively large. Therefore, reserving the PDCCH transmission scrambled by the P-RNTI in the second time window helps to maintain the user's paging reception.

Optionally, when the first downlink transmission includes a PDCCH, the PDCCH includes one or more of the following: PDCCH scrambled by C-RNTI, PDCCH scrambled by CS-RNTI, PDCCH scrambled by SFI-RNTI, PDCCH scrambled by INT-RNTI PDCCH scrambled by CI-RNTI, PDCCH scrambled by TPC-PUCCH-RNTI, PDCCH scrambled by TPC-PUSCH-RNTI, PDCCH scrambled by TPC-SRS-RNTI, PDCCH scrambled by AI-RNTI, SI-RNTI scrambled PDCCH, RA-RNTI scrambled PDCCH, TC-RNTI scrambled PDCCH, or P-RNTI scrambled PDCCH.

In a possible implementation, the second indication information further indicates that the network device does not receive the first uplink transmission within the second time window. Correspondingly, the terminal device may also determine based on the second indication information that the network device has not received the first uplink transmission within the second time window, that is, when the terminal device sends the first uplink transmission within the second time window, the first uplink transmission The transmission is invalid, and the terminal device considers that the first uplink transmission fails to be received by the network device side. Based on this possible implementation manner, the network device can dynamically turn off the first downlink transmission and the first uplink transmission, which is beneficial to save power consumption of the network device.

In a possible implementation, if the first uplink transmission includes GB PUSCH, the terminal device does not consider it necessary to send GB PUSCH within the second time window, that is, the terminal device does not expect GB PUSCH to exist within the second time window.

Optionally, if the first uplink transmission includes PUCCH, PUCCH may include one or more of the following: PUCCH bearing HARQ-ACK of dynamically scheduled PDSCH, PUCCH bearing HARQ-ACK of SPS PDSCH, PUCCH bearing CSI, bearing PUCCH of SR or BFR.

In a possible implementation, the second indication information indicates that the network device does not send the first downlink transmission within the second time window by displaying an indication, and the first status value of the second indication information indicates that the network device does not send the first downlink transmission within the second time window. The first downlink transmission is not sent within the window; the second state value of the second indication information indicates that the network device sends the first downlink transmission within the second time window.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the value of the second indication information is the second state value. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the value of the second indication information is the first state value. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining invalid transmissions within the second time window as valid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines the value of the second indication information based on the RRC signaling sent by the network device is the first state value or the second state value. Based on this possible implementation manner, the value of the second indication information can be flexibly determined.

In a possible implementation, the second indication information implicitly indicates that the network device does not send the first downlink transmission within the second time window, and the second indication information "exists" indicates that the network device does not send the first downlink transmission within the second time window. The first downlink transmission is not sent within the time window, that is, the first downlink transmission is invalid; the second indication information "absent" instructs the network device to send the first downlink transmission within the second time window.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the second indication information does not exist. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the second indication information exists. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining invalid transmissions within the second time window as valid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines whether the second indication information exists based on the RRC signaling sent by the network device. Based on this possible implementation manner, it may be flexibly determined whether the first downlink transmission received within the second time window is valid.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines that the network device sends the first downlink transmission within the second time window . Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines that the network device has not sent the first downlink channel within the second time window. transmission. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining invalid transmissions within the second time window as valid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel that carries the second MAC CE or the second DCI, the terminal device determines that the network device sends the second MAC CE at the second time based on the RRC signaling sent by the network device. Whether to send the first downlink transmission within the window. Based on this possible implementation manner, it may be flexibly determined whether the first downlink transmission received within the second time window is valid.

In a fourth aspect, the present application provides a transmission indication method, the method comprising: the network device does not send the first downlink transmission within the second time window; the network device sends second indication information to the terminal device, the second indication information Instructing the network device not to send the first downlink transmission within the second time window, that is, indicating that the first downlink transmission received by the terminal device within the second time window is invalid; the second indication information is carried in the first MAC CE signaling Or the first DCI signaling, the end time of the second time window is not later than the transmission time T ₁ of the first physical downlink channel carrying the second MAC CE or the second DCI.

In a possible implementation, the second MAC CE or the second DCI is carried on a multicast or broadcast physical downlink channel.

In a possible implementation, the time unit at which the end time of the second time window is located is the latest time unit whose end time is not later than time _T1 .

In another possible implementation, the end time of the second time window is the end time of the third time unit, and the third time unit is the latest time unit whose end time is not later than time T ₃ , time T ₃ =T ₁ -ΔT2; wherein, _T1 is the transmission moment of the first physical downlink channel, ΔT2 is the second time length, and the second time length ΔT2 is preset, or the second indication information also indicates the second time length ΔT2.

In a possible implementation, the end time of the second time window is the end time of the fourth time unit, and the fourth time unit is the latest time unit whose end time is no later than the transmission time _T1 of the first physical downlink channel .

In a possible implementation, the duration of the second time window is preset; or, the second indication information further indicates the duration of the second time window.

In yet another possible implementation, the first downlink does not include the PDCCH scrambled by the SSB and the P-RNTI.

In a possible implementation, the second indication information further indicates that the network device does not receive the first uplink transmission within the second time window. Correspondingly, the network device does not receive the first uplink transmission within the second time window. Based on this possible implementation manner, the network device can dynamically turn off the first downlink transmission and the first uplink transmission, which is beneficial to save power consumption of the network device.

Optionally, when the first downlink transmission includes PUCCH, the PUCCH may include one or more of the following: PUCCH bearing HARQ-ACK of dynamically scheduled PDSCH, PUCCH bearing HARQ-ACK of SPS PDSCH, PUCCH bearing CSI, PUCCH carrying SR or BFR.

In another possible implementation, the second indication information implicitly indicates that the network device does not send the first downlink transmission within the second time window, and the second indication information "exists" indicates that the network device does not send the first downlink transmission within the second time window. The first downlink transmission is not sent within the window, that is, the first downlink transmission is invalid; the second indication information "absent" instructs the network device to send the first downlink transmission within the second time window.

For the beneficial effects of the fourth aspect, refer to the corresponding beneficial effects of the third aspect, which will not be repeated here.

In a fifth aspect, the present application provides a communication device, and the communication device may be a terminal device, or a device in the terminal device, or a device that can be matched with the terminal device. Wherein, the communication device may also be a system on a chip. The communication device may execute the method described in the first aspect or the third aspect. The functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module can be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the method and beneficial effects described in the first or third aspect above.

In a sixth aspect, the present application provides a communication device. The communication device may be a network device, or a device in the network device, or a device that can be matched with the network device. Wherein, the communication device may also be a system on a chip. The communication device may execute the method described in the second aspect or the fourth aspect. The functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module can be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the method and beneficial effects described in the second or fourth aspect above.

In a seventh aspect, the present application provides a communication device, the communication device includes a processor and an interface circuit, and the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or The signal from the processor is sent to other communication devices other than the communication device, and the processor implements the methods described in the first aspect to the fourth aspect through a logic circuit or executing code instructions.

In an eighth aspect, the present application provides a computer-readable storage medium, where computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the first aspect to the fourth aspect are implemented. the method described.

In a ninth aspect, the present application provides a computer program product including instructions. When the communication device reads and executes the instructions, the communication device executes the method according to any one of the first aspect to the fourth aspect.

In a tenth aspect, the present application provides a communication system, including a communication device for performing the method described in the first aspect above, and a communication device for performing the method described in the second aspect above. Alternatively, it includes a communication device for performing the method described in the third aspect above, and a communication device for performing the method described in the fourth aspect above.

Description of drawings

FIG. 1 is a schematic diagram of an existing DRX cycle;

FIG. 2 is a schematic diagram of a communication system provided by an embodiment of the present application;

Fig. 3 is a schematic diagram of a time unit provided by an embodiment of the present application;

FIG. 4 is a schematic flowchart of a transmission indication method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a first time window provided by an embodiment of the present application;

Fig. 6 is a schematic diagram of another first time window provided by the embodiment of the present application;

FIG. 7 is a schematic diagram of another first time window provided by the embodiment of the present application;

Fig. 8 is a schematic diagram of another first time window provided by the embodiment of the present application;

FIG. 9 is a schematic diagram of another first time window provided by the embodiment of the present application;

FIG. 10 is a schematic flowchart of another transmission indication method provided by the embodiment of the present application;

FIG. 11 is a schematic diagram of a second time window provided by an embodiment of the present application;

Fig. 12 is a schematic diagram of another second time window provided by the embodiment of the present application;

Fig. 13 is a schematic diagram of another second time window provided by the embodiment of the present application;

Fig. 14 is a schematic diagram of another second time window provided by the embodiment of the present application;

Fig. 15 is a schematic diagram of another second time window provided by the embodiment of the present application;

Fig. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 17 is a schematic structural diagram of another communication device provided by an embodiment of the present application.

Detailed ways

The terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

In order to better understand this application, the communication system provided by the embodiment of this application is introduced below:

FIG. 2 is a schematic diagram of a communication system 2000 applied by an embodiment of the present application. As shown in FIG. 2 , the communication system 2000 includes a radio access network 100 and a core network 200 . Optionally, the communication system 2000 may also include the Internet 300 . Wherein, the radio access network 100 may include at least one radio access network device (such as 110a and 110b in FIG. 2 ), and may also include at least one terminal device (such as 120a-120j in FIG. 2 ). The terminal equipment is connected to the wireless access network equipment in a wireless manner, and the wireless access network equipment is connected to the core network in a wireless or wired manner. The core network equipment and the wireless access network equipment can be independent and different physical equipment, or the functions of the core network equipment and the logical functions of the wireless access network equipment can be integrated on the same physical equipment, or it can be a physical equipment It integrates some functions of core network equipment and some functions of wireless access network equipment. Terminal devices and terminal devices and wireless access network devices may be connected to each other in a wired or wireless manner. FIG. 2 is only a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 2 .

The radio access network equipment can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), and the next generation in the fifth generation (5th generation, 5G) mobile communication system Base station (next generation NodeB, gNB), the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also complete the base station part A functional module or unit, for example, can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station The functions of the radio link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part or all of the physical layer. For the specific description of the above-mentioned protocol layers, please refer to the third-generation partner The relevant technical specifications of the plan (3rd generation partnership project, 3GPP). The radio access network device may be a macro base station (such as 110a in Figure 2), a micro base station or an indoor station (such as 110b in Figure 2), or a relay node or a donor node. The embodiment of the present application does not limit the specific technology and specific equipment form adopted by the radio access network equipment. In the embodiments of the present application, the radio access network device may be referred to as network device for short. For the convenience of description, the radio access network device is referred to as network device for description below.

A terminal device may also be called a terminal, a user equipment (user equipment, UE), a mobile station, a mobile terminal, and the like. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (internet of things, IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

Network equipment and terminal equipment can be fixed or mobile. Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and artificial satellites in the air. The embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

The roles of network equipment and terminal equipment may be relative. For example, the helicopter or drone 120i in FIG. 2 may be configured as a mobile network equipment. , the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, communication between 110a and 120i is performed through a wireless air interface protocol. Of course, communication between 110a and 120i may also be performed through an interface protocol between network devices. In this case, compared to 110a, 120i is also a network device. Therefore, both network equipment and terminal equipment can be collectively referred to as communication devices, 110a and 110b in FIG. 2 can be referred to as communication devices with network device functions, and 120a-120j in FIG. 2 can be referred to as communication devices with terminal device functions .

Communication between network devices and terminal devices, between network devices and network devices, between terminal devices and terminal devices can be performed through licensed spectrum, or through license-free spectrum, or through licensed spectrum and license-free spectrum at the same time Communication: Communication can be performed through a frequency spectrum below 6 gigahertz (GHz), or can be performed through a frequency spectrum above 6 GHz, and can also be performed using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the frequency spectrum resources used for wireless communication.

In the embodiments of the present application, the functions of the network device may also be performed by modules (such as chips) in the network device, or may be performed by a control subsystem including the functions of the network device. Here, the control subsystem including network device functions may be the control center in the above application scenarios such as smart grid, industrial control, intelligent transportation, and smart city. The functions of the terminal equipment may also be performed by a module (such as a chip or a modem) in the terminal equipment, or may be performed by a device including the functions of the terminal equipment.

Some nouns or terms used in the embodiments of the present application are explained below.

(1) Physical downlink channel

Physical downlink channels include PDSCH and PDCCH. The PDCCH is used to bear the DCI, and the potential transmission position of the PDCCH (including the position in the time domain and the position in the frequency domain) is configured through RRC signaling. PDSCH is used to bear the downlink data channel, and PDSCH is divided into dynamically scheduled PDSCH and SPS PDSCH. For dynamically scheduled PDSCH, each PDSCH transmission corresponds to a DCI, which is used to indicate the time-frequency resources and other parameters of the PDSCH transmission; for SPS PDSCH, the transmission of SPS PDSCH is repeated periodically, and the transmission cycle is determined by RRC The signaling is configured, and the first transmission is activated by DCI, and the last transmission is also deactivated by DCI.

(2) DCI transmission timing

The DCI transmission opportunity is also referred to as the PDCCH transmission opportunity, which refers to a potential time domain position of PDCCH transmission. Alternatively, it refers to the time domain position where the start symbol of PDCCH transmission is located.

(3) Transmission timing of SPS PDSCH

The transmission timing of SPS PDSCH refers to the time domain position of SPS PDSCH transmission. Specifically, the first transmission of SPS PDSCH is determined according to the time domain resource allocation field in the activated DCI, and the subsequent time domain positions of other transmissions are determined according to the first transmission position and the It is determined by the preset period of the SPS PDSCH mentioned above.

(4) Physical downlink channel for multicast or broadcast

A multicast or broadcast physical downlink channel can be detected and decoded by multiple terminal devices. A multicast or broadcast physical downlink channel includes a multicast or broadcast PDSCH and a multicast or broadcast PDCCH.

In this application, the broadcast PDSCH can be scheduled by one broadcast DCI. For example, the broadcast DCI is scrambled by a common RNTI of a cell, so that all terminal devices in the cell can use the RNTI to decode the broadcast DCI to receive the broadcast PDSCH. Multicast PDSCH can be scheduled by one multicast DCI. For example, the multicast DCI is scrambled by a common RNTI of a user group, so that all terminal devices in the user group can use the RNTI to decode the multicast DCI to receive the multicast PDSCH.

In this application, the DCI carried by the multicast or broadcast PDCCH is referred to as broadcast DCI or multicast DCI for short, wherein the multicast DCI may also be called group common DCI. The broadcast DCI is scrambled by a common RNTI of a cell, so that all terminal devices in the cell can use this RNTI to decode the broadcast DCI. The multicast DCI is scrambled by a common RNTI of a user group, so that all terminal devices in the user group can use this RNTI to decode the multicast DCI.

(5) Time unit

A time unit is a time-domain unit for signal transmission, which may include a radio frame, a subframe, a slot, a mini-slot, or at least one OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbols and other time domain units. OFDM symbols may also be referred to as time-domain symbols for short. FIG. 3 is a schematic diagram of a possible time unit relationship in the present application. Referring to FIG. 3 , the time domain length of a radio frame is 10 ms. A radio frame may include 10 radio subframes, and a time domain length of a radio subframe is 1 ms. A radio subframe may include one or more time slots, and the specific number of time slots included in a subframe is related to the subcarrier space (Subcarrier Space, SCS). For the case where the SCS is 15kHz, the time domain length of a time slot is 1ms. One slot includes 14 symbols.

(6) Discontinuous transmission (dis-continuous transmit, DTX) mechanism

In order to reduce the power consumption of the communication device, the communication device may be enabled not to send data transmission for a period of time, or the communication device may be enabled not to send all or part of the channels for a period of time. This way of reducing power consumption of communication devices may be called a DTX mechanism. The following description is made by taking the communication device as a network device as an example.

For example, the network device can set a transmission pattern, and only perform data transmission in a part of the time period in a transmission cycle, and do not perform data transmission or data transmission and reception in other time periods.

When there is no business load, the network device DTX mechanism can be used to reduce the power consumption of the network device.

When the business load is very light, although there are data transmissions in many transmission time intervals, the resource utilization rate of the transmission time intervals is very low. At this time, the DTX mechanism of the network device can also be used to collect the data to be sent into the time period A In this way, the DTX state can be entered in the time period B, and the static energy saving of the network equipment can be realized.

It should be noted that, for the network device DTX mechanism, the network device can choose whether to perform data transmission and reception or silence in each TTI, and notify the terminal device; or, the network device can also be triggered by the terminal device to determine whether to perform data transmission or silence.

The transmission instruction method and communication device provided in the embodiments of the present application are further described in detail below.

Fig. 4 is a schematic flowchart of a transmission indication method provided by an embodiment of the present application. As shown in FIG. 4 , the transmission instruction method includes the following steps 401 to 402 . The execution subject of the method shown in FIG. 4 may be a terminal device and a network device. Alternatively, the execution subject of the method shown in FIG. 4 may be a chip in the terminal device and a chip in the network device. FIG. 4 uses a terminal device and a network device as execution subjects of the method as examples for illustration.

401. The network device sends first indication information to the terminal device. Correspondingly, the terminal device may receive the first indication information.

Wherein, the first indication information is used to instruct the terminal device not to receive the first downlink transmission within the first time window, and the first indication information is carried in the first MAC CE or the first DCI.

402. The network device does not send the first downlink transmission within the first time window. Correspondingly, the terminal device does not receive the first downlink transmission within the first time window based on the first indication information.

That is to say, the network device can implement DTX transmission, and the terminal equipment can implement DRX transmission.

The relevant content of the first MAC CE bearing the first indication information is introduced in detail below:

In a possible implementation, the first MAC CE is carried on a multicast or broadcast PDSCH. Since the multicast or broadcast PDSCH is sent to a group of terminal equipment, rather than user-specific (UE-specific), the first indication information is sent to the terminal equipment through the multicast or broadcast PDSCH, avoiding network equipment for each The problem of high signaling overhead caused by the terminal equipment sending the first indication information respectively reduces the signaling overhead of the network equipment.

In a possible implementation, the first MAC CE may also be carried on a unicast PDSCH.

In a possible implementation, the PDSCH carried by the first MAC CE may be an SPS PDSCH. The terminal device may receive the SPS PDSCH at a preset transmission occasion (occasion) of the SPS PDSCH, and decode the SPS PDSCH to obtain the first MAC CE. Since the SPS PDSCH timing occurs periodically, the relationship between the first time window and the SPS PDSCH transmission timing can satisfy one or more of the following relationships:

(1) The period length of the SPS PDSCH can be predefined as the duration of the first time window, so that there is no need to additionally configure the duration of the first time window.

(2) The end moment of the first time window can be predefined as the start moment of the next SPS PDSCH transmission opportunity, so that there is no need to additionally configure the end moment of the first time window.

By making the first MAC CE borne in the SPS PDSCH, there is a relationship between the transmission opportunity of the SPS PDSCH and the first time window, which is beneficial to save indication overhead.

In a possible implementation, the PDSCH carried by the first MAC CE may be a dynamically scheduled (dynamic) PDSCH.

The relevant content of the first DCI carrying the first indication information is introduced in detail below:

In a possible implementation, the first DCI may be carried on a multicast or broadcast PDCCH. That is, the first DCI may be a multicast DCI or a broadcast DCI. For the network device, sending the first indication information through the multicast DCI or the broadcast DCI is beneficial to reduce the indication overhead compared to sending the corresponding first indication information to each terminal device.

In a possible implementation, the first DCI may also be carried on a unicast PDCCH.

Based on the fact that the first DCI is carried on a multicast or broadcast PDCCH, or carried on a unicast PDCCH, the first DCI may also have one or more of the following designs:

Way 1: The first DCI is obtained by adding a field in a DCI format of the existing protocol, where the added field is used to carry the first indication information.

The second way is to obtain the first DCI by designing a DCI format different from that in the existing protocol, that is, the first DCI is different from the DCI format in the existing protocol. Compared with the DCI format in the existing protocol, the first DCI is a A new DCI format.

Mode 3, the first DCI corresponds to a new RNTI, and the RNTI is used to scramble the first DCI. For example, the scrambled RNTI has the same value for multiple terminal devices, and multiple terminal devices can detect and decode the first DCI.

In this embodiment of the present application, the terminal device may determine the position of the first time window based on two or three of the start time of the first time window, the duration of the first time window, and the end time of the first time window.

The starting moment of the first time window, the duration of the first time window and the end moment of the first time window are introduced respectively below:

(1) The starting time of the first time window

The starting moment of the first time window is not earlier than the transmission moment T ₁ of the first physical downlink channel carrying the first MAC CE or the first DCI. For example, the starting moment of the first time window may be equal to the transmission moment T ₁ of the first physical downlink channel. Or, the starting moment of the first time window is after the transmission moment _T1 of the first physical downlink channel. The transmission time _T1 of the first physical downlink channel may be the transmission start time of the first physical downlink channel or the transmission end time of the first physical downlink channel.

It should be noted that the transmission time _T1 in this application is the transmission time understood by the alignment between the network device and the terminal device. For example, for the network device, the transmission time _T1 of the first physical downlink channel may be the first physical downlink channel sending time. For the terminal device, the transmission moment _T1 of the first physical downlink channel may be the receiving moment of the first physical downlink channel.

Fig. 5 is an example in which the starting time of the first time window is after the transmission time _T1 of the first physical downlink channel. As shown in FIG. 5 , the network device sends the first indication information to the terminal device through the first physical downlink channel. After the network device sends the first indication information, the network device does not send the first downlink transmission within a first time window after the transmission time _T1 of the first physical downlink channel. Correspondingly, after the terminal device receives the first indication information, the terminal device does not receive the first downlink transmission within the first time window after the transmission time _T1 of the first physical downlink channel based on the first indication information.

Since the start time of the first time window is not earlier than the transmission time T ₁ of the first physical downlink channel carrying the first MAC CE or the first DCI, how to determine the start time of the first time window, several possible options are proposed below The way to choose:

Mode A: The start time of the first time window is determined by the transmission time _T1 of the first physical downlink channel and the first time length ΔT1, and the first time length ΔT1 is preset or indicated by the first indication information. The first time length ΔT1 is preset, which means that the first time length ΔT1 is predetermined by the protocol. Or, that the first time length ΔT1 is preset means that the first time length ΔT1 is configured by the network device through RRC signaling. After the terminal device receives the first physical downlink channel, it takes a certain amount of time to decode the first indication information. Determining the start time of the first time window based on the transmission time _T1 of the first physical downlink channel and the first time length ΔT1 is beneficial to ensure that the determined start time of the first time window is located before the terminal device parses the first indication information After the time of , the situation that the terminal device is not sure whether to receive the first downlink transmission before parsing the first indication information is avoided.

Optionally, the starting time of the first time window is the starting time of the first time unit, and the first time unit is the earliest time unit whose starting time is not earlier than time T ₂ , time T ₂ =T ₁ +ΔT1 . Based on this possible implementation, it is beneficial to ensure that the first time window starts from the beginning of a time unit, conforming to the characteristics that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

For example, the transmission time T ₁ , the first time length ΔT1 and the time T ₂ of the first physical downlink channel are shown in FIG. 6 . The start instant of time unit 4 is equal to instant T ₂ . Since time unit 4 is the earliest time unit whose start time is not earlier than time _T2 , the first time unit is time unit 4.

For another example, the transmission time T ₁ , the first time length ΔT1 and the time T ₂ of the first physical downlink channel are shown in FIG. 7 . The start time of time unit 4 is later than time T ₂ . Since time unit 4 is the earliest time unit whose start time is not earlier than time _T2 , the first time unit is time unit 4.

Optionally, the first time length ΔT1 is greater than or equal to a first threshold, where the first threshold is the shortest processing time supported by the terminal device for the first physical downlink channel. This is beneficial to ensure that the determined starting time of the first time window is located after the time when the terminal device parses out the first indication information, so as to prevent the terminal device from being uncertain whether to receive the first downlink transmission before parsing the first indication information The problem of abnormal communication caused by the situation.

Optionally, the first threshold may be predetermined by the protocol, that is, the shortest processing time supported by the terminal device for the first physical downlink channel is predetermined by the protocol. The shortest processing duration of the first physical downlink channel is simply referred to as the shortest processing duration.

Optionally, the first physical downlink channel is the first PDSCH, and the shortest processing duration is the shortest processing duration T _proc,1 from the terminal device receiving the first PDSCH to sending the HARQ-ACK corresponding to the first PDSCH; or, the shortest processing duration is The minimum processing time required by the terminal device to receive the first PDSCH and complete the decoding of the first PDSCH

For example,

The parameters a and b are predefined by the protocol; the definition of the shortest processing duration T _proc,1 can refer to the relevant description in Section 5.3 of 3GPP TS38.214, and will not be repeated here. Optionally, the value of parameter a satisfies 0<a≤1 or 0<a≤0.5, and the value of parameter b is 0, or the length of 1 or 2 transmission symbols.

Optionally, if the first physical downlink channel is the first PDCCH, the shortest processing duration may be the shortest processing duration T _proc,2 from when the terminal device receives the first PDCCH to sending the PUSCH scheduled by the first PDCCH, or when the terminal device receives the first PDCCH The shortest processing time required from one PDCCH to complete the decoding of the first PDCCH

For example is

Wherein, the definition of the shortest processing duration T _proc,2 can be found in Section 6.4 of 3GPP TS 38.214. Parameters c and d are predefined by the protocol; optionally, the value of parameter c satisfies 0<c≤1 or 0<c≤0.5, the value of parameter d is 0, or the length of 1 or 2 transmission symbols .

Optionally, the protocol pre-specifies that the shortest processing duration includes the shortest processing duration under N different situations, where N is greater than 1, and the first threshold value is the maximum value among the above-mentioned N shortest processing durations; or, the first threshold value is the above-mentioned The nth value among the N shortest processing durations, where 1≤n≤N, where n is pre-indicated by the network device. For example, the protocol defines two types of terminal device processing capabilities, corresponding to N=2 shortest processing durations. In order to ensure that all terminal devices in the cell can successfully decode the first indication information in time and within the first time window, the first The threshold is the maximum of the above two shortest processing durations.

Mode B: The starting time of the first time window is determined by the transmission time _T1 of the first physical downlink channel. For example, the starting time of the first time window is the starting time of the second time unit, and the second time unit is the earliest time unit whose starting time is not earlier than the transmission time _T1 of the first physical downlink channel.

For example, the transmission time _T1 of the first physical downlink channel is as shown in FIG. 8 . The starting moment of time unit 4 is equal to the transmission moment T ₁ of the first physical downlink channel. Since time unit 4 is the earliest time unit whose start time is not earlier than the transmission time _T1 of the first physical downlink channel, the second time unit is time unit 4 .

As another example, the transmission time _T1 of the first physical downlink channel is as shown in FIG. 9 . The start time of time unit 4 is later than the transmission time T ₁ of the first physical downlink channel. Since time unit 4 is the earliest time unit whose start time is not earlier than the transmission time _T1 of the first physical downlink channel, the second time unit is time unit 4 .

Mode C: The first indication information can be used to directly indicate the start time of the first time window, which is beneficial to reduce the calculation amount of the terminal device and reduce the power consumption of the terminal device.

(2) The duration of the first time window

The duration of the first time window is preset or indicated by the first indication information. The duration of the first time window being preset means that the duration of the first time window is predetermined by the protocol. Alternatively, the duration of the first time window being preset means that the duration of the first time window is configured by the network device through RRC signaling.

Presetting the duration of the first time window helps to save the overhead of indicating the duration of the first time window. The duration of the first time window is indicated by the first indication information, the duration of the first time window can be changed dynamically, and the duration of the first time window can be more flexible.

(3) The end time of the first time window

The end time of the first time window is preset or indicated by the first indication information. The fact that the end time of the first time window is preset means that the end time of the first time window is predetermined by the protocol. Alternatively, the fact that the end time of the first time window is preset means that the end time of the first time window is configured by the network device through RRC signaling. For example, the network device can be configured through RRC signaling: when the first indication information is carried on the first MAC CE and the first MAC CE is carried on the SPS PDSCH, the end time of the first time window is the next SPS carrying the first MAC CE The start time of the detection opportunity of the PDSCH, or, when the first indication information is carried in the first DCI, the end time of the first time window is the start time of the next detection opportunity of the first DCI carrying the first indication information.

By presetting the end time of the first time window, it is beneficial to save the indication overhead of the end time of the first time window. Indicating the end time of the first time window by using the first indication information is also beneficial to reducing the calculation amount of the terminal device and reducing the power consumption of the terminal device.

The relevant content of the first downlink transmission is introduced in detail below:

In a possible implementation, the first downlink transmission includes any one or more of the following: PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS or SSB. For example, the first downlink transmission includes PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS and SSB. In this way, the network device and the terminal device can dynamically shut down many downlink transmissions, which is beneficial to save the power consumption of the network device and the terminal device.

The fact that the terminal device does not receive the PDCCH within the first time window means that the terminal device does not perform blind detection on the PDCCH at the transmission opportunity of the PDCCH within the first time window.

The terminal device does not receive the dynamically scheduled PDSCH within the first time window means: the terminal device does not receive the dynamically scheduled PDSCH within the first time window, the terminal device considers that there is no dynamically scheduled PDSCH transmission, and will not generate a dynamically scheduled PDSCH corresponding feedback information.

The terminal device does not receive SPS PDSCH in the first time window means: the terminal device does not receive SPS PDSCH at the transmission timing of SPS PDSCH in the first time window, the terminal device thinks that there is no SPS PDSCH transmission, and will not generate SPS PDSCH corresponding feedback information.

The fact that the terminal device does not receive CSI-RS within the first time window means that the terminal device does not measure CSI-RS within the first time window, and the terminal device considers that there is no CSI-RS transmission, and will not generate a measurement result for CSI-RS .

In a possible implementation, the first downlink transmission includes: PDCCH, dynamically scheduled PDSCH, SPS PDSCH and CSI-RS, and the first downlink transmission does not include SSB. For SSB transmission, not only terminal devices in connected state need to receive, but also terminal devices in idle state or inactive state need to receive, but terminal devices in idle state or inactive state may not be able to successfully receive the first indication information. Therefore, reserving SSB transmission in the first time window helps to maintain SSB reception and measurement of idle or inactive terminal devices, and avoids measurement errors caused by network devices not sending SSB but idle or inactive terminal devices trying to detect SSB , to avoid operations such as unnecessary cell reselection. On the other hand, the cycle of SSB transmission itself is relatively large, and the proportion of the time domain is relatively small. Network equipment sending SSB within the first time window will not bring a lot of power consumption to the network equipment. Receiving the SSB does not bring significant power consumption to the terminal equipment.

In a possible implementation, the first downlink transmission does not include the PDCCH scrambled by the SSB and the P-RNTI. The PDCCH scrambled by the P-RNTI is used to schedule the paging indication of the terminal equipment, and the position where each terminal equipment receives the corresponding PDCCH scrambled by the P-RNTI is pre-configured. For a certain terminal device, if the network device skips the PDCCH transmission opportunity scrambled by the P-RNTI this time, it needs to wait until the next preconfigured opportunity, and the waiting delay is relatively large. Therefore, reserving the PDCCH transmission scrambled by the P-RNTI within the first time window helps to maintain the paging reception of the terminal device.

Optionally, when the first downlink transmission includes a PDCCH, the PDCCH includes one or more of the following: PDCCH scrambled by C-RNTI, PDCCH scrambled by CS-RNTI, PDCCH scrambled by SFI-RNTI, PDCCH scrambled by INT-RNTI PDCCH scrambled by CI-RNTI, PDCCH scrambled by TPC-PUCCH-RNTI, PDCCH scrambled by TPC-PUSCH-RNTI, PDCCH scrambled by TPC-SRS-RNTI, PDCCH scrambled by AI-RNTI, SI-RNTI scrambled PDCCH, RA-RNTI scrambled PDCCH, TC-RNTI scrambled PDCCH, or P-RNTI scrambled PDCCH. That is, the terminal device does not perform blind detection on the PDCCHs scrambled by these RNTIs within the first time window.

In a possible implementation, the first indication information further instructs the terminal device not to send the first uplink transmission within the first time window. Correspondingly, the terminal device may also not send the first uplink transmission within the first time window based on the first indication information, and the network device may not receive the first uplink transmission within the first time window. Based on this possible implementation, the network device can not only turn off the sending of the first downlink transmission, but also turn off the receiving of the first uplink transmission and the signal processing corresponding to the first uplink transmission, so as to further reduce the power consumption of the network device. Correspondingly, the terminal device may dynamically turn off the receiving of the first downlink transmission and the sending of the first uplink transmission, which is beneficial to save power consumption of the terminal device.

In the full text of this application, GB PUSCH refers to the PUSCH determined based on a UL DCI, or in other words, the PUSCH is scheduled by a UL DCI.

In a possible implementation, if the first uplink transmission includes GB PUSCH, the terminal device does not consider it necessary to send GB PUSCH within the first time window, that is, the terminal device does not expect GB PUSCH to exist within the first time window.

Optionally, when the first uplink transmission includes a PUCCH, the PUCCH may include one or more of the following: a PUCCH carrying a HARQ-ACK of a dynamically scheduled PDSCH, a PUCCH carrying a HARQ-ACK of an SPS PDSCH, and a PUCCH carrying channel state information CSI PUCCH, PUCCH carrying SR or BFR.

The first indication information may indicate that the terminal device does not receive the first downlink transmission within the first time window in an explicit indication manner or an implicit indication manner.

(1) Indication method displayed

In a possible implementation, the first indication information is an information bit, and different state values of the information bit are used to indicate different information. The first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window; the second state value of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window .

For example, the first indication information is a 1-bit information bit. When the 1-bit state value is 1, the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window. When the 1-bit state value When the value is 0, the first indication information indicates that the terminal device receives the first downlink transmission within the first time window. Or, when the 1-bit status value is 0, the first indication information indicates that the terminal equipment does not receive the first downlink transmission within the first time window; when the 1-bit status value is 1, the first indication information indicates that the terminal equipment A first downlink transmission is received within a first time window.

In another example, the first indication information is a 2-bit information bit. When the 2-bit status value is 11, it indicates that the terminal device does not receive the first downlink transmission within the first time window; when the 2-bit status value is 00, it indicates that the terminal device receives the first downlink transmission within the first time window. Line transmission. Or, when the 2-bit status value is 00, it indicates that the terminal equipment does not receive the first downlink transmission within the first time window; when the 2-bit status value is 11, it indicates that the terminal equipment receives the first downlink transmission within the first time window. downlink transmission.

(2) Implicit indication method

The terminal device determines whether to receive the first downlink transmission within the first time window by detecting whether the first indication information exists in the first MAC CE or the first DCI. In a possible implementation, the first indication information "exists" indicates that the terminal device does not receive the first downlink transmission within the first time window; the first indication information "absent" indicates that the terminal device receives the first downlink transmission within the first time window; First downlink transmission. Alternatively, the first indication information "absence" indicates that the terminal device does not receive the first downlink transmission within the first time window; the first indication information "exists" indicates that the terminal device receives the first downlink transmission within the first time window.

Taking the first indication information carried on the first MAC CE as an example, when the first MAC CE is carried on the SPS PDSCH, the terminal device receives the SPS PDSCH at the preset time-frequency position and decodes it, and queries the data after decoding Whether the first MAC CE contained in the block. If the first MAC CE is included, that is, the first indication information "exists", the terminal device does not receive the first downlink transmission within the first time window. When the data block does not contain the first MAC CE, that is, the first indication information "does not exist", the terminal device receives the first downlink transmission within the first time window.

In a possible implementation, the network device does not send the first downlink transmission within the first time window, which may also be understood as being in an inactive state within the first time window. The fact that the network device sends the first downlink transmission within the first time window may also be understood as that the network device is in an active state within the first time window. Correspondingly, the terminal device does not receive the first downlink transmission within the first time window, which may be understood as the terminal device is in an inactive state within the first time window. The fact that the terminal device receives the first downlink transmission within the first time window may be understood as that the terminal device is in an activated state within the first time window. The first indication information indicating that the terminal device does not receive the first downlink transmission within the first time window may also be understood as: the first indication information indicates that the terminal device is in an inactive state within the first time window. The first indication information indicating that the terminal device receives the first downlink transmission within the first time window may also be understood as: the first indication information indicates that the terminal device is in an active state within the first time window.

In a possible implementation, because the network device does not send the first downlink transmission within the first time window, and the terminal device does not receive the first downlink transmission within the first time window, there is a transmission demand within the first time window The network device can resend the first downlink transmission and/or receive the first uplink transmission on the available time-frequency resources after the end of the first time window; the terminal device can resend the first downlink transmission on the available time-frequency resources after the end of the first time window Re-receive the first downlink transmission and/or send the first uplink transmission. Based on this possible implementation manner, energy saving of network devices and terminal devices can be realized without sacrificing data transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device receives the first downlink transmission within the first time window. That is, when the terminal device cannot obtain the first indication information, the terminal device receives the first downlink transmission within the first time window, or it is understood that when the terminal device cannot obtain the first indication information, the terminal device considers that the first indication information The information indicates that the terminal device receives the downlink transmission within the first time window. Based on this possible implementation manner, it is beneficial for the terminal device not to miss receiving the downlink transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device does not receive the first downlink transmission within the first time window. That is, when the terminal device cannot obtain the first indication information, the terminal device does not receive downlink transmission within the first time window, or it is understood that when the terminal device cannot obtain the first indication information, the terminal device considers that the first indication information indicates The terminal device does not receive downlink transmission within the first time window. Based on this possible implementation manner, it is beneficial to save the power consumption of the terminal device.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device determines whether the A first downlink transmission is received. Based on this possible implementation, when the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device can flexibly determine whether to receive the first MAC CE or the first DCI within the first time window according to the RRC signaling. First downlink transmission.

In a possible implementation, the first indication information is carried on the first MAC CE and the first MAC CE is carried on the SPS PDSCH: when the first indication information indicates that the first downlink transmission is not received within the first time window, and the first When the next transmission opportunity of the SPS PDSCH carrying the first MAC CE is included in a time window, the terminal device performs any of the following operations:

(1) The SPS PDSCH is not received at the next transmission opportunity. This helps to save power consumption of the terminal device. Correspondingly, the network device will not send the SPS PDSCH at the next transmission opportunity, thereby reducing the power consumption of the network device.

(2) The terminal device performs SPS PDSCH reception on the next transmission opportunity, and determines whether to receive the first downlink transmission in the next first time window according to the first indication information in the SPS PDSCH received on the next transmission opportunity . Correspondingly, the network device sends the SPS PDSCH at the next transmission opportunity.

For example, the terminal device determines that the first downlink transmission needs to be performed in the next first time window according to the first indication information in the SPS PDSCH received at the next transmission opportunity. When the next first time window partially overlaps with the previous first time window, the terminal device behavior in the next first time window will overwrite the terminal device behavior in the previous first time window, that is, the terminal device will perform the first time window in the overlapping part. downlink transmission. In this way, network devices can continuously adjust decision-making behaviors to obtain maximum scheduling flexibility.

(1) The first DCI is not received at the next transmission opportunity. Correspondingly, the network device will not send the first DCI at the next transmission opportunity, so that the power consumption of the network device can be reduced.

(2) The terminal device receives the first DCI at the next transmission opportunity, and determines whether to receive the first downlink in the next first time window according to the first indication information in the first DCI received at the next transmission opportunity transmission. Correspondingly, the network device sends the first DCI at the next transmission opportunity.

For example, the terminal device determines, according to the first indication information in the first DCI received at the next transmission opportunity, that the first downlink transmission needs to be performed in the next first time window. When the next time window partially overlaps with the previous first time window, the behavior of the terminal device in the next first time window will cover the behavior of the terminal device in the previous first time window, that is, the terminal device will perform the first time window in the overlapping part. downlink transmission. In this way, network devices can continuously adjust decision-making behaviors to obtain maximum scheduling flexibility.

(3) The terminal device determines whether to receive the first DCI at the first DCI transmission opportunity according to the RRC signaling sent by the network device. In this way, it can be determined more flexibly whether to receive the first DCI within the first time window.

It can be seen that by implementing the method described in Figure 4, the network device can instruct the terminal device not to receive the first downlink transmission within the first time window through MAC CE and DCI, and can dynamically and flexibly configure DRX for the terminal device, which is beneficial to Reduce the performance loss of terminal equipment, while reducing the power consumption of network equipment and terminal equipment.

Another transmission indication method provided by the embodiment of the present application is introduced below:

Fig. 10 is a schematic flowchart of another transmission indication method provided by the embodiment of the present application. As shown in FIG. 10 , the transmission instruction method includes the following steps 1001 to 1003 . The execution body of the method shown in FIG. 10 may be a terminal device and a network device. Alternatively, the execution subject of the method shown in FIG. 10 may be a chip in the terminal device and a chip in the network device. FIG. 10 uses a terminal device and a network device as examples for execution of the method.

1001. The network device does not send the first downlink transmission within the second time window.

That is, network equipment can implement DTX transmission.

1002. The network device sends second indication information to the terminal device. Correspondingly, the terminal device may receive the second indication information.

Wherein, the second indication information indicates that the network device does not send the first downlink transmission within the second time window, and the second indication information is carried in the second MAC CE or the second DCI. Alternatively, it can also be understood that the second indication information indicates that the terminal device does not need to receive the first downlink transmission within the second time window.

The relevant content of the second MAC CE carrying the second indication information is described in detail below:

In a possible implementation, the second MAC CE is carried on a multicast or broadcast PDSCH. Since the multicast or broadcast PDSCH is sent to a group of terminal equipment, rather than user-specific (UE-specific), the second indication information is sent to the terminal equipment through the multicast or broadcast PDSCH, which avoids network equipment for each The problem of high signaling overhead caused by the terminal equipment sending the second indication information respectively reduces the signaling overhead of the network equipment.

In a possible implementation, the second MAC CE may also be carried on the unicast PDSCH.

In a possible implementation, the PDSCH carried by the second MAC CE may be an SPS PDSCH. The terminal device can receive the SPS PDSCH at the preset transmission timing of the SPS PDSCH, and decode the SPS PDSCH to obtain the second MAC CE. Since the SPS PDSCH timing occurs periodically, the relationship between the second time window and the SPS PDSCH transmission timing can satisfy one or more of the following relationships:

(1) The period length of the SPS PDSCH can be predefined as the duration of the second time window, so that there is no need to additionally configure the duration of the second time window.

(2) The start moment of the second time window can be predefined as the start moment or end moment of the last SPS PDSCH opportunity, so that the start moment of the second time window does not need to be additionally configured.

By making the second MAC CE borne in the SPS PDSCH, there is and a relationship between the transmission opportunity of the SPS PDSCH and the second time window is predefined, which is beneficial to save indication overhead.

In a possible implementation, the PDSCH carried by the second MAC CE may be a dynamically scheduled PDSCH.

The relevant content of the second DCI carrying the second indication information is introduced in detail below:

In a possible implementation, the second DCI may be carried on a multicast or broadcast PDCCH. That is, the second DCI may be a multicast DCI or a broadcast DCI. For the network device, sending the second indication information through the multicast DCI or the broadcast DCI is beneficial to reduce the indication overhead compared to sending the corresponding second indication information to each terminal device.

In a possible implementation, the second DCI may also be carried on a unicast PDCCH.

Based on the fact that the second DCI is carried on a multicast or broadcast PDCCH, or carried on a unicast PDCCH, the second DCI may also have one or more of the following designs:

Way 1: The second DCI is obtained by adding a field in a DCI format of the existing protocol, where the added field is used to carry the second indication information.

The second method is to obtain the first DCI by designing a DCI format different from that in the existing protocol, that is, the second DCI is different from the DCI format in the existing protocol. Compared with the DCI format in the existing protocol, the second DCI is A new DCI format.

Mode 3, the second DCI corresponds to a new RNTI, and the RNTI is used to scramble the second DCI. For example, the scrambled RNTI has the same value for multiple terminal devices, and multiple terminal devices can detect and decode the second DCI.

In this embodiment of the present application, the terminal device may determine the position of the second time window based on two or three of the end time of the second time window, the duration of the second time window, and the start time of the second time window.

The end time of the second time window, the duration of the second time window and the start time of the second time window are introduced respectively below:

(1) The end time of the second time window

The ending moment of the second time window is not later than the transmission moment T ₁ of the first physical downlink channel carrying the second MAC CE or the second DCI. For example, the end moment of the second time window may be equal to the transmission moment T ₁ of the first physical downlink channel. Or, the end moment of the second time window is before the transmission moment _T1 of the first physical downlink channel. The transmission time _T1 of the first physical downlink channel may be the transmission start time of the first physical downlink channel or the transmission end time of the first physical downlink channel.

For example, in FIG. 11 , it is taken as an example that the end time of the second time window is before the transmission time _T1 of the first physical downlink channel. As shown in FIG. 11 , the network device finds that there is less data to be transmitted within the second time window, which can be postponed until later to send together with the later data, so it decides not to send the first downlink transmission. After the second time window ends, the network device sends second indication information to the terminal device, telling the terminal device that the network device did not send the first downlink transmission within the second time window before the transmission time _T1 of the first physical downlink channel . Correspondingly, after receiving the second indication information, the terminal device determines that the first downlink transmission received within the second time window before the transmission time _T1 of the first physical downlink channel is invalid.

Since the end time of the second time window is not earlier than the transmission time T ₁ of the first physical downlink channel carrying the second MAC CE or the second DCI, several options are proposed below for how to determine the start time of the second time window The way:

Mode A: The end time of the second time window is determined by the transmission time _T1 of the first physical downlink channel and the second time length ΔT2, and the second time length ΔT2 is preset or indicated by the second indication information. The second time length ΔT2 is greater than zero. The fact that the second time length ΔT2 is preset means that the second time length ΔT2 is predetermined by the protocol. Alternatively, the second time length ΔT2 being preset means that the second time length ΔT2 is configured by the network device through RRC signaling. Since the network device needs a certain processing delay to prepare to send the second indication information after the second time window, the end time of the second time window is determined based on the transmission time _T1 of the first physical downlink channel and the second time length ΔT2, It is beneficial to make the end time of the second time window be before the transmission time _T1 of the first physical downlink channel, so as to better match the sending processing overhead on the network device side.

Optionally, the end time of the second time window is the end time of the third time unit, and the third time unit is the latest time unit whose end time is not later than time T ₃ , time T ₃ =T ₁ -ΔT2. Based on this possible implementation, it is beneficial to ensure that the second time window ends at the end of a time unit, which conforms to the feature that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

For example, the transmission time T ₁ , the second time length ΔT2 and the time T ₃ of the first physical downlink channel are shown in FIG. 12 . The end instant of time unit 4 is equal to instant T ₃ . Since time unit 4 is the latest time unit whose end time is not later than time _T3 , the third time unit is time unit 4.

For another example, the transmission time T ₁ , the second time length ΔT2 and the time T ₃ of the first physical downlink channel are shown in FIG. 13 . The start time of time unit 4 is earlier than time T ₃ . Since time unit 4 is the latest time unit whose end time is not later than time _T3 , the third time unit is time unit 4.

Mode B: The end time of the second time window is determined by the transmission time _T1 of the first physical downlink channel. For example, the end time of the second time window is the end time of the fourth time unit, and the fourth time unit is the latest time unit whose end time is not later than time _T1 . Based on this possible implementation, it is beneficial to ensure that the second time window ends at the end of a time unit, which conforms to the feature that network devices and terminal devices transmit in units of time units, and can reduce implementation complexity.

For example, the transmission time _T1 of the first physical downlink channel is shown in FIG. 14 . The end time of time unit 4 is equal to the transmission time T ₁ of the first physical downlink channel. Since time unit 4 is the latest time unit whose end time is not later than the transmission time _T1 of the first physical downlink channel, the fourth time unit is time unit 4 .

As another example, the transmission time _T1 of the first physical downlink channel is as shown in FIG. 15 . The start time of time unit 4 is earlier than the transmission time T ₁ of the first physical downlink channel. Since time unit 4 is the latest time unit whose end time is not later than the transmission time _T1 of the first physical downlink channel, the fourth time unit is time unit 4 .

Mode C: The second indication information may also be used to directly indicate the end time of the second time window, which is beneficial to reduce the calculation amount of the terminal device and reduce the power consumption of the terminal device.

(2) The duration of the second time window

The duration of the second time window is preset or indicated by the second indication information. The duration of the second time window being preset means that the duration of the second time window is predetermined by the protocol. Or, that the duration of the second time window is preset means that the duration of the second time window is configured by the network device through RRC signaling.

Wherein, preset the duration of the second time window is beneficial to save the indication overhead of the duration of the second time window. The duration of the second time window is indicated by the second indication information, the duration of the second time window can be changed dynamically, and the duration of the second time window can be more flexible.

(3) The start time of the second time window

The starting moment of the second time window is preset or indicated by the second indication information. The fact that the start time of the second time window is preset means that the start time of the second time window is predetermined by the protocol. Alternatively, the fact that the start time of the second time window is preset means that the start time of the second time window is configured by the network device through RRC signaling. For example, when the second indication information is carried on the second MAC CE and the second MAC CE is carried on the SPS PDSCH, the starting moment of the second time window is the start of the detection opportunity of the last SPS PDSCH carrying the second MAC CE Time or end time, or, when the second indication information is carried in the second DCI, the start time of the second time window is the start time or end time of the last detection opportunity carrying the first indication and the new second DCI.

By presetting the start time of the second time window, it is beneficial to save the indication overhead of the end time of the second time window. Indicating the start time of the second time window by using the second indication information is also beneficial to reducing the calculation amount of the terminal device and reducing the power consumption of the terminal device.

1003. The terminal device determines based on the second indication information that the network device has not sent the first downlink transmission within the second time window.

In the embodiment of the present application, after the terminal determines the second time window, if the first downlink transmission is not received within the second time window, no processing is performed. If the first downlink transmission is received, the first downlink transmission is considered invalid, and the first downlink transmission reception information and measurement results are ignored.

For example, if the first downlink transmission includes the PDCCH, the terminal device determines that the blind detection of the PDCCH within the second time window is invalid. The terminal device may ignore the downlink transmission and uplink transmission scheduled by the DCI on the PDCCH within the second time window. The measurement and reporting indicated by the DCI on the PDCCH are ignored.

For another example, if the first downlink transmission includes a dynamically scheduled PDSCH or SPS PDSCH, the terminal device flushes out the buffered dynamically scheduled PDSCH or SPS PDSCH received within the second time window, and does not need to feed back the PDSCH received in the second time window. The HARQ-ACK of the dynamically scheduled PDSCH or SPS PDSCH received within.

For another example, if the first downlink transmission includes the CSI-RS, the terminal device deletes the measurement information on the CSI-RS within the second time window.

In a possible implementation, the first downlink transmission includes any one or more of the following: PDCCH, dynamically scheduled PDSCH, SPS PDSCH, CSI-RS or SSB. For example, the first downlink transmission includes PDCCH, dynamically configured PDSCH, SPS PDSCH, CSI-RS and SSB. In this way, the network device can dynamically shut down many downlink transmissions, which is beneficial to save the power consumption of the network device.

In a possible implementation, the first downlink transmission includes: PDCCH, dynamically scheduled PDSCH, SPS PDSCH and CSI-RS, and the first downlink transmission does not include SSB. For SSB transmission, not only terminal devices in connected state need to receive, but also terminal devices in idle state or inactive state need to receive, but terminal devices in idle state or inactive state may not be able to successfully receive the second indication information. Therefore, reserving SSB transmission in the second time window helps to maintain SSB reception and measurement of idle or inactive terminal devices, and avoids measurement errors caused by network devices not sending SSB but idle or inactive terminal devices trying to detect SSB , resulting in unnecessary operations such as cell reselection. On the other hand, the cycle of SSB transmission itself is relatively large, and the proportion of the time domain is relatively small, and the network device sending SSB within the second time window will not bring a lot of power consumption to the network device.

In a possible implementation, the first downlink does not include the PDCCH scrambled by the SSB and the P-RNTI. The PDCCH scrambled by the P-RNTI is used to schedule the user's paging indication, and where each user receives the corresponding PDCCH scrambled by the P-RNTI is pre-configured. For a certain UE, if the base station skips the PDCCH transmission opportunity scrambled by the P-RNTI this time, it needs to wait until a pre-configured opportunity, and the waiting delay is relatively large. Therefore, reserving the PDCCH transmission scrambled by the P-RNTI in the second time window helps to maintain the user's paging reception.

In a possible implementation, the network device may not receive the first uplink transmission within the second time window. The second indication information also indicates that the network device does not receive the first uplink transmission within the second time window. Correspondingly, the terminal device may also determine that the first uplink transmission sent within the second time window is invalid based on the second indication information, that is, the terminal device considers that the first uplink transmission fails to be received at the network device side. Based on this possible implementation, the network device can not only turn off the sending of the first downlink transmission, but also turn off the receiving of the first uplink transmission and the signal processing corresponding to the first uplink transmission, so as to further reduce the power consumption of the network device.

The second indication information may indicate that the network device does not send the first downlink transmission within the second time window in an explicit indication manner or an implicit indication manner.

(1) Indication method displayed

In a possible implementation, the second indication information is an information bit, and different state values of the information bit are used to indicate different information. The first state value of the second indication information indicates that the network device has not sent the first downlink transmission within the second time window; the second state value of the second indication information indicates that the network device sends the first downlink transmission within the second time window .

For example, the second indication information is a 1-bit information bit. When the 1-bit status value is 1, it indicates that the network device has not sent the first downlink transmission within the second time window; when the 1-bit status value is 0 , instructing the network device to send the first downlink transmission within the second time window. Or, when the 1-bit status value is 0, it indicates that the network device has not sent the first downlink transmission within the second time window; when the 1-bit status value is 1, it indicates that the network device sends the first downlink transmission within the second time window. downlink transmission.

For another example, the second indication information is a 2-bit information bit. When the 2-bit status value is 11, it indicates that the network device has not sent the first downlink transmission within the second time window; when the 2-bit status value is 00, it indicates that the network device sends the first downlink transmission within the second time window. Line transmission. Or, when the 2-bit status value is 00, it indicates that the network device has not sent the first downlink transmission within the second time window; when the 2-bit status value is 11, it indicates that the network device sends the first downlink transmission within the second time window. downlink transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the value of the second indication information is the first state value. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

(2) Implicit indication method

The terminal device determines whether the network device sends the first downlink transmission within the second time window by detecting whether the second indication information exists in the second MAC CE or the second DCI. In a possible implementation, the second indication information "exists" indicates that the network device has not sent the first downlink transmission within the second time window, that is, the first downlink transmission is invalid; the second indication information "absence" indicates that the network device The device sends the first downlink transmission within the second time window. Alternatively, the second indication information "absence" indicates that the network device has not sent the first downlink transmission within the second time window, that is, the first downlink transmission is invalid; Send the first downlink transmission within.

Taking the second indication information carried on the second MAC CE as an example, when the second MAC CE is carried on the SPS PDSCH, the terminal device receives and decodes the SPS PDSCH at the preset time-frequency position, and queries the data after decoding MAC CE included in the block. If the second MAC CE is included, that is, the second indication information "exists", the terminal device does not need to receive the first downlink transmission within the second time window, that is, the first downlink transmission is invalid. When the data block does not contain the second MAC CE, that is, the second indication information "does not exist", the terminal device needs to receive the first downlink transmission within the second time window.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device confirms that the second indication information exists. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines whether the second indication information exists based on the RRC signaling sent by the network device. Based on this possible implementation manner, it may be flexibly determined whether the second indication information exists.

In a possible implementation, the network device does not send the first downlink transmission within the second time window, which may also be understood as being in an inactive state within the second time window. The fact that the network device sends the first downlink transmission within the second time window may also be understood as being in an active state within the second time window. The second indication information indicating that the network device does not send the first downlink transmission within the second time window may also be understood as: the second indication information indicates that the network device is in an inactive state within the second time window. The second indication information indicating that the network device sends the first downlink transmission within the second time window may also be understood as: the second indication information indicates that the network device is in the active state within the second time window.

Optionally, the network device may send the first downlink transmission and/or receive the first uplink transmission on the available time-frequency resource after the end of the second time window; the terminal device may send the first downlink transmission on the available time-frequency resource after the end of the second time window Re-receive the first downlink transmission and/or send the first uplink transmission. Based on this possible implementation manner, energy saving of network equipment can be realized without sacrificing data transmission.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines that the network device has sent the first downlink channel within the second time window. transmission, that is, the terminal device determines that the first downlink transmission received within the second time window is valid. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining valid transmissions within the second time window as invalid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines that the network device has not sent the first downlink channel within the second time window. transmission, that is, the terminal device determines that the first downlink transmission received within the second time window is invalid. Based on this possible implementation manner, it is beneficial to prevent the terminal device from determining invalid transmissions within the second time window as valid transmissions.

In a possible implementation, if the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, the terminal device determines based on the radio resource control RRC signaling sent by the network device that the network device is in Whether the first downlink transmission is sent within the second time window. Based on this possible implementation, when the terminal device fails to decode the first physical downlink channel carrying the second MAC CE or the second DCI, it can be flexibly determined that the network device has not sent the first downlink channel within the second time window. transmission.

It can be seen that by implementing the method described in FIG. 10, the network device can dynamically indicate whether the network device itself sends the first downlink transmission within the second time window through MAC CE and DCI, and the network device side can more flexibly turn off the downlink transmission , which is beneficial to reduce the performance loss of the terminal equipment. Moreover, by turning off the first downlink transmission first, and then indicating to the terminal device that the network device has turned off the first downlink transmission, the network device does not need to predict the transmission volume of the first downlink transmission at a subsequent time to determine whether to turn off the first downlink transmission. The downlink transmission is beneficial to save the power consumption of the network device, and improves the flexibility of the network device to send downlink transmission or silent downlink transmission.

It can be understood that, in order to implement the functions in the foregoing embodiments, the network device and the terminal device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and method steps of the examples described in the embodiments disclosed in the present application. Whether a certain function is executed by hardware or computer software drives the hardware depends on the specific application scenario and design constraints of the technical solution.

FIG. 16 and FIG. 17 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. These communication apparatuses may be used to realize the functions of the terminal device or the network device in the foregoing method embodiments, and thus also realize the beneficial effects of the foregoing method embodiments. In the embodiment of this application, the communication device may be one of the terminal devices 120a-120j shown in FIG. 2, or the

network device

110a or 110b shown in FIG. Or a module (such as a chip) of a network device.

As shown in FIG. 16 , a communication device 1600 includes a processing unit 1610 and a transceiver unit 1620 .

In a possible implementation, the communication apparatus 1600 is configured to implement functions of the terminal device or the network device in the method embodiment shown in FIG. 4 above.

When the communication device 1600 is used to realize the function of the terminal device in the method embodiment shown in FIG. For downlink transmission, the first indication information is carried in the first MAC CE or the first DCI; the processing unit 1610 is configured not to receive the first downlink transmission within the first time window based on the first indication information.

When the communication device 1600 is used to implement the functions of the network device in the method embodiment shown in FIG. 4: the transceiver unit 1620 is used to send the first indication information to the terminal device, and the first indication information is used to indicate that the terminal device is in the first time window The first downlink transmission is not received, and the first indication information is carried in the first MAC CE signaling or the first DCI signaling.

More detailed descriptions about the processing unit 1610 and the transceiver unit 1620 can be directly obtained by referring to related descriptions in the method embodiment shown in FIG. 4 , and details are not repeated here.

In another possible implementation, the communication apparatus 1600 is configured to implement functions of the terminal device or the network device in the method embodiment shown in FIG. 10 above.

When the communication device 1600 is used to implement the functions of the terminal device in the method embodiment shown in FIG. 10: the transceiver unit 1620 is used to receive the second indication information, the second indication information indicates that the network device has not sent the second time window within the second time window. For downlink transmission, the second indication information is carried on the first MAC CE or the first DCI, and the end time of the second time window is no later than the transmission time of the first physical downlink channel carrying the second MAC CE or the second DCI T ₁ ; the processing unit 1610 is configured to determine, based on the second indication information, that the first downlink transmission received within the second time window is invalid.

When the communication device 1600 is used to implement the functions of the network device in the method embodiment shown in FIG. 10: the processing unit 1610 is used to not send the first downlink transmission within the second time window; the transceiver unit 1620 is used to send the first downlink transmission to the terminal device The second indication information, the second indication information indicates that the network device has not sent the first downlink transmission within the second time window, the second indication information is carried in the first MAC CE signaling or the first DCI signaling, and the second time window The end time of is not later than the transmission time T ₁ of the first physical downlink channel carrying the second MAC CE or the second DCI.

More detailed descriptions about the processing unit 1610 and the transceiver unit 1620 can be directly obtained by referring to the relevant descriptions in the method embodiment shown in FIG. 10 , and details are not repeated here.

As shown in FIG. 17 , a communication device 1700 includes a processor 1710 and an interface circuit 1720 . The processor 1710 and the interface circuit 1720 are coupled to each other. It can be understood that the interface circuit 1720 may be a transceiver or an input-output interface. Optionally, the communication device 1700 may further include a memory 1730 for storing instructions executed by the processor 1710 or storing input data required by the processor 1710 to execute the instructions or storing data generated by the processor 1710 after executing the instructions.

When the communication device 1700 is used to implement the method shown in FIG. 4 or FIG. 10 , the processor 1710 is used to implement the functions of the processing unit 1610 , and the interface circuit 1720 is used to implement the functions of the transceiver unit 1620 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules or antenna) to send information, which is sent by the terminal device to the network device.

When the above communication device is a module applied to network equipment, the network equipment module implements the functions of the network equipment in the above method embodiments. The network equipment module receives information from other modules in the network equipment (such as radio frequency modules or antennas), and the information is sent to the network equipment by the terminal equipment; or, the network equipment module sends information to other modules in the network equipment (such as radio frequency modules or antenna) to send information, which is sent by the network device to the terminal device. The network device module here may be a baseband chip of the network device, or a DU or other modules, and the DU here may be a DU under an open radio access network (O-RAN) architecture.

It can be understood that the processor in the embodiments of the present application can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor can be a microprocessor, or any conventional processor.

The method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only Memory, registers, hard disk, removable hard disk, CD-ROM or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disk; or it may be a semiconductor medium, such as a solid state disk. The computer readable storage medium may be a volatile or a nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

Claims

A transmission instruction method, characterized in that the method comprises:

The terminal device receives first indication information, the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window, and the first indication information is carried in the first media access control-control element MAC CE or the first downlink control information DCI;

The terminal device does not receive the first downlink transmission within the first time window based on the first indication information.
The method according to claim 1, wherein the first MAC CE or the first DCI is carried on a physical downlink channel of multicast or broadcast.
The method according to claim 1 or 2, wherein the starting moment of the first time window is determined by the transmission time T1 of the first physical downlink channel and the first time length ΔT1, and the first physical downlink The channel is a physical downlink channel carrying the first MAC CE or the first DCI, and the first time length ΔT1 is preset or indicated by the first indication information.
The method according to claim 3, wherein the starting moment of the first time window is the starting moment of the first time unit, and the first time unit is the starting moment not earlier than time T2 The earliest time unit, the time T 2 =T 1 +ΔT1.
The method according to claim 3 or 4, wherein the first time length ΔT1 is greater than or equal to a first threshold, and the first threshold is the first physical downlink channel supported by the terminal device. The minimum processing time for .
The method according to any one of claims 1-5, characterized in that, the duration of the first time window is preset or indicated by the first indication information.
The method according to any one of claims 1-6, wherein the first downlink transmission includes any one or more of the following: Physical Downlink Control Channel (PDCCH), Dynamically Scheduled Physical Downlink Shared Channel (PDSCH) , Semi-persistently scheduled downlink shared physical channel SPS PDSCH, channel state information-reference signal CSI-RS or synchronization signal-broadcast channel block SSB.
The method according to any one of claims 1 to 6, wherein the first downlink transmission comprises: a physical downlink control channel (PDCCH), a dynamically scheduled physical downlink shared channel (PDSCH), and a semi-persistently scheduled downlink shared physical channel. channel SPS PDSCH and channel state information-reference signal CSI-RS, and the first downlink transmission does not include synchronization signal-broadcast channel block SSB.
The method according to any one of claims 1-8, characterized in that,

The first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window;

The second status value of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window.
The method according to any one of claims 1-9, wherein the method further comprises:

If the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device receives the first downlink transmission within the first time window ;or,

If the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device does not receive the first downlink channel within the first time window transmission; or,

If the terminal device fails to decode the first physical downlink channel carrying the first MAC CE or the first DCI, the terminal device determines based on the radio resource control RRC signaling sent by the network device Whether to receive the first downlink transmission within the first time window.
A transmission instruction method, characterized in that the method comprises:

The network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device not to receive the first downlink transmission within the first time window, and the first indication information is carried in the first media interface Incoming control-control element MAC CE signaling or first downlink control information DCI signaling;

The network device does not send the first downlink transmission within the first time window.
The method according to claim 11, wherein the first MAC CE or the first DCI is carried on a physical downlink channel of multicast or broadcast.
The method according to claim 11 or 12, wherein the starting moment of the first time window is the starting moment of the first time unit, and the starting moment of the first time unit is not earlier than time T The earliest time unit of 2 , the time T 2 =T 1 +ΔT1;

Wherein, the T1 is the transmission moment of the first physical downlink channel, the ΔT1 is the first time length, and the first physical downlink channel is the physical downlink channel carrying the first MAC CE or the first DCI The first time length ΔT1 is preset, or the first indication information also indicates the first time length ΔT1.
The method according to claim 13, characterized in that the first time length ΔT1 is greater than or equal to a first threshold, and the first threshold is the number of times that the terminal equipment can support for the first physical downlink channel Minimum processing time.
The method according to any one of claims 11-14, characterized in that, the duration of the first time window is preset; or, the first indication information also indicates the duration of the first time window Duration.
The method according to any one of claims 11-15, wherein the first downlink transmission includes any one or more of the following: Physical Downlink Control Channel (PDCCH), Dynamically Scheduled Physical Downlink Shared Channel (PDSCH) , Semi-persistently scheduled downlink shared physical channel SPS PDSCH, channel state information-reference signal CSI-RS or synchronization signal-broadcast channel block SSB.
The method according to any one of claims 11-15, wherein the first downlink transmission comprises: Physical Downlink Control Channel (PDCCH), Dynamically Scheduled Physical Downlink Shared Channel (PDSCH), Semi-persistently Scheduled Downlink Shared Physical channel SPS PDSCH and channel state information-reference signal CSI-RS, and the first downlink transmission does not include synchronization signal-broadcast channel block SSB.
The method according to any one of claims 11-17, characterized in that,

The first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window;

The second status value of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window.
A communication device, characterized in that the communication device includes:

A transceiver unit, configured to receive first indication information, the first indication information instructing the communication device not to receive the first downlink transmission within the first time window, the first indication information being carried in the first medium access control - In the control element MAC CE or the first downlink control information DCI;

A processing unit, configured to not receive the first downlink transmission within the first time window based on the first indication information.
The communication device according to claim 19, wherein the first MAC CE or the first DCI is carried on a physical downlink channel of multicast or broadcast.
The communication device according to claim 19 or 20, wherein the starting moment of the first time window is determined by the transmission moment T1 of the first physical downlink channel and the first time length ΔT1, and the first physical The downlink channel is a physical downlink channel that bears the first MAC CE or the first DCI, and the first time length ΔT1 is preset or indicated by the first indication information.
The communication device according to claim 21, wherein the starting time of the first time window is the starting time of the first time unit, and the first time unit is that the starting time is not earlier than time T2 The earliest time unit of , the time T 2 =T 1 +ΔT1.
The communication device according to claim 21 or 22, wherein the first time length ΔT1 is greater than or equal to a first threshold, and the first threshold is supported by the communication device for the first physical downlink The minimum processing time for the channel.
The communication device according to any one of claims 19-23, wherein the duration of the first time window is preset or indicated by the first indication information.
The communication device according to any one of claims 19-24, wherein the first downlink transmission includes any one or more of the following: a physical downlink control channel (PDCCH), a dynamically scheduled physical downlink shared channel PDSCH, semi-persistently scheduled downlink shared physical channel SPS PDSCH, channel state information-reference signal CSI-RS or synchronization signal-broadcast channel block SSB.
The communication device according to any one of claims 19-24, wherein the first downlink transmission includes: a physical downlink control channel (PDCCH), a dynamically scheduled physical downlink shared channel (PDSCH), and a semi-persistently scheduled downlink shared channel. Physical channel SPS PDSCH and channel state information-reference signal CSI-RS, and the first downlink transmission does not include synchronization signal-broadcast channel block SSB.
The communication device according to any one of claims 19 to 26, characterized in that:

A first state value of the first indication information indicates that the communication device does not receive the first downlink transmission within the first time window;

A second state value of the first indication information indicates that the communication device receives the first downlink transmission within the first time window.
The communication device according to any one of claims 19 to 27, wherein:

The transceiver unit is further configured to receive the first downlink within the first time window if the decoding of the first physical downlink channel carrying the first MAC CE or the first DCI is unsuccessful. transmission; or,

The transceiver unit is further configured to not receive the first downlink channel within the first time window if the decoding of the first physical downlink channel carrying the first MAC CE or the first DCI is unsuccessful. line transmission; or,

The transceiver unit is further configured to, if the decoding of the first physical downlink channel carrying the first MAC CE or the first DCI is unsuccessful, determine based on the radio resource control RRC signaling sent by the network device Whether to receive the first downlink transmission within the first time window.
A communication device, characterized in that the communication device includes:

A transceiver unit, configured to send first indication information to the terminal device, where the first indication information is used to indicate that the terminal device does not receive the first downlink transmission within the first time window, and the first indication information is carried in the second A media access control-control element MAC CE signaling or first downlink control information DCI signaling;

The transceiver unit is further configured not to send the first downlink transmission within the first time window.
The communication device according to claim 29, wherein the first MAC CE or the first DCI is carried on a physical downlink channel of multicast or broadcast.
The communication device according to claim 29 or 30, wherein the starting time of the first time window is the starting time of the first time unit, and the first time unit is that the starting time is not earlier than time The earliest time unit of T 2 , said time T 2 =T 1 +ΔT1;

Wherein, the T1 is the transmission moment of the first physical downlink channel, the ΔT1 is the first time length, and the first physical downlink channel is the physical downlink channel carrying the first MAC CE or the first DCI The first time length ΔT1 is preset, or the first indication information also indicates the first time length ΔT1.
The communication device according to claim 31, characterized in that, the first time length ΔT1 is greater than or equal to a first threshold, and the first threshold is supported by the terminal equipment for the first physical downlink channel The minimum processing time for .
The communication device according to any one of claims 29-32, wherein the duration of the first time window is preset; or, the first indication information also indicates that the first time window duration of .
The communication device according to any one of claims 29-33, wherein the first downlink transmission includes any one or more of the following: a physical downlink control channel (PDCCH), a dynamically scheduled physical downlink shared channel PDSCH, semi-persistently scheduled downlink shared physical channel SPS PDSCH, channel state information-reference signal CSI-RS or synchronization signal-broadcast channel block SSB.
The communication device according to any one of claims 29-33, wherein the first downlink transmission includes: a physical downlink control channel (PDCCH), a dynamically scheduled physical downlink shared channel (PDSCH), and a semi-persistently scheduled downlink shared channel. Physical channel SPS PDSCH and channel state information-reference signal CSI-RS, and the first downlink transmission does not include synchronization signal-broadcast channel block SSB.
The communication device according to any one of claims 29 to 35, wherein:

The first state value of the first indication information indicates that the terminal device does not receive the first downlink transmission within the first time window;

The second status value of the first indication information indicates that the terminal device receives the first downlink transmission within the first time window.
A communication device, characterized in that it includes a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transmit signals from the processor The signal is sent to other communication devices other than the communication device, and the processor implements the method according to any one of claims 1 to 10 through a logic circuit or executing code instructions, or, the processor The method according to any one of claims 11 to 18 is implemented by using a logic circuit or executing code instructions.
A chip system, characterized in that the chip system includes a processor and an interface, the processor is coupled to the interface; the interface is used to receive or output signals, and the processor is used to execute code instructions, so that The method of any one of claims 1-10 is performed, or the method of any one of claims 11-18 is caused to be performed.
A communication system, characterized in that the communication system includes a terminal device and a network device, the terminal device is used to execute the method according to any one of claims 1-10, and the network device is used to execute the method according to The method according to any one of claims 11-18.
A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the implementation of any one of claims 1 to 10 , or implement a method as claimed in any one of claims 11 to 18.
A computer program product, characterized in that the computer program product includes instructions, when the instructions are executed, the method according to any one of claims 1-10 is implemented, or, the method according to any one of claims The method described in any one of 11-18 is realized.